Lock.



G.v E. LOWE.I

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UNITED STATES PATENT oEEIoE.'

CHARLES EDWARD LOWE, OF MCALESTER, OKLAHOMA, ASSIGNOR OF ONE-THIRD TO WALTER CARL ELLIS AND ONE-THIRD IO CLAUD D. ELLIS, BOTH OF GUTHRIE,

OKLAHOMA.

LOCK.

Specification of Letters Patent.

Patented July 5, 1910.

To all whom it may concern:

Be it known that I, CHARLES EDWARD LOWE, a citizen of the United States, and a resident of McAlester, county of Pittsburg, State of Oklahoma, have invented new and useful Improvements in Locks, of which the following is a full, clear, and exact specification.

My invention relates more particularly to escutcheon plates to locks, and is a modiiication of those shown in my application for Letters Patent, filed Oct. l0, 1908, bearing Serial Number 457,081.

In my present invention the plate is adapted to be used with any of the ordinary types of mortised locks, after certain necessary changes have been made therein, while in my previous invention the plate is more especially adapted for the particular lock there shown.

Referring to the drawings- Figure Yl is a perspective view of part of a door showing my improved lock. Fig. 2 is a perspective view of One of the escutcheon plates. Fig. 3 is a view of part of the back o f a lock with the escutcheon plates in position. Fig. 4 is a side view of part of a lock showing the changes necessary to adapt it for use with my escutcheon plates. Fig. 5 is a slightly different positioning of the parts to retain the escutcheon plates, and Fig. 6 is a modification showing the lock bolt offset to permit sufficient room for the escutcheon plate securing means.

My invention is intended for application to any of the ordinary mortised door locks, and comprises means whereby the escutchcon plates may be accurately positioned with respect to the lock to bring the key and knob spindle holes of each exactly in alinement with those of the lock. It is adapted to be used with varying thicknesses of doors and makes substantially one piece of the lock casing and escutcheon plates.

The lock casing A may be the casing of any ordinary lock having any desired operating mechanism with the'usual lock bolt a and latch l). The lock has the facing plate c, which is set in a niche cut in the edge of the door to make a flush joint therewith. The plate is extended on all four sides in the usual manner and is provided at top and bottom with holes ci for fastening screws, and with the holes e and f to permit the ings latch and lock to extend therethrough re spectively. A niche or recess g is formed in the face plate preferably between the latch and lock bolt. This may be produced in any convenient way as by giving an offset to the plate at this point or as Shown in the drawthe plate may be cut away on its front face to smaller dimension forming the web 7L.. Immediately behind this recess the sides 'af of the lock casing are cut out forn'iing slots j. At either end of the slots are L-Shaped or right-angular parts /c so positioned as to leave the Slots clear but at the same time to act as supports for those parts of the escutcheon plates that extend within the slots j as will later be described. These angular supports may be secured in any convenient manner or they may be made integral with the facing plate. In any instance, it is preferable that they should not be so wide as to extend to the edge of the facing plate (see Fig. 3).

The escutcheon plates B may be of any desired type. They are shown as having the holes Z for the fastening screws, the key hole m and the hole n to permit the 'door knob spindle to extend therethrough. The plates set fiat upon the face of the door. They are provided along their front edges with the extensions 0. At a suitable distance from the plates these extensions are bent over at right angles forming lips p oppositely disposed on the pair of plates. The extensions o adjacent the plates set out upon the door in the same manner as the plates; but at a suitable distance from the bent-over edges forming the lips the extensions have offset parts g extending inwardly. These offset parts set in recesses formed in the door near the edge so that the extensions o at those .parts will make a flush joint with the door and will not interfere with the proper setting of the door against the door stop. The lips p are provided with the slots 1 which divide them into two parts, an outer lip s and an inner one t. The inner lip is of a size to snugly `fit within the slot formed between the web 7b and the angular parts 7c of the facing plate o. The slot- 7' is of a size to engage the web 7L, the two making a snug t, and the outer lip s a flush joint with the face plate on the outside thereof. The lips are so positioned upon the escutchcon plates that when they are in proper position upon the door the respective key and knob spindle holes of the lock and escutchcon lplateswill. accurately register. To install my lock, the usual mortise is made in the door, making the face plate iush with the edge thereof, extra mortisingl being made if necessary to receive the angular parts is.. The lock is then inserted and the door marked where it is necessary to cut it to admit the lips pand offsetv parts g. After these have been cut the lock is again inserted, and theV escutcheon plates placed inposition. l1`hel doorjis then marked by aid` of the escutcheon plates -for the key and knob spindle holes and after these have been drilled, the lock andi plates are once more inserted and permanently secured by essary to raise them above the latch; 'lhei parts are similar to'those already described and therefore noA further' description is deemed. necessary, the similari parts being denoted by similar characters of reference l"with the accent added..

It may sometimes happen ythat there is neither room above,.below nor betweenv the latch: a-nd lock bolt; in such. casethe space f between the latch and lock bolt. may be inclaimcreased asl shownin Fig. 6 by dropping theworking end of the bolt a.. Otherwise the parts are similar toV those alreadydescribed..

Spacek may also be gai-ned below the lock bolt, if desirable, by raising; the working end of thelock bolt;V Asis Vobvious,.whether the end ofthe` bolt be offset to. raise or lower it, no other change need; be made` inthe opere ating mechanism.

Having `thus described my invention I 1;.Iny a mortise door lock-afv faceplate, a transverse recess .fin the,` front of the plate, a lock casing, slots through -thes-ide walls. of the casing adjacent the `plate behind the recess,.an escutcheon plate at either' sideof the e lock, a right-angular extension on the front edge of each plate and a slot formed in the free bent-over end of each extension dividing the end into two members, the outer member being adapted to lit within the recess of the face plate, the inner member being adapted to fit within the slot in the casing.

2. In a mortise door lock a face plate, a

transverse recess in the front of the plate, a lock casing, slots through the side walls of the casing adj acent the l)late behind the recess, right-angular mem ers at the ends of the'rslots in the shoulders formed by the casing and face plate, an escutcheon plate at eitherv side ofthe lock, a right-angular extensionon the front edge of each plate and a slot formed in the free bent-,over end of each extension dividing the end into two members, the outer member being adapted to it within the recess of thev face late, the inner member being adapted to ht within the space formed betweenv the back of the face plate and the right angular members and having its 'end extending through the sl'oili in the casing and into the interior of the loc 3. In a mortise door lock' aface, .plate, a transverse recess in they front of the plate, a lock casing, slots through the side Walls of' the casing adjacent the plate behindy the rei cess, right-angular members at the ends of the slots in the shoulders formed by the casing and' face plate, an' escutcheon plate at either side of the lock, an extension formed on the frontA edgel of'each plate in the same plane therewith, inwardly offset ends to said extensions,y right-angular terminations to said extensions, and slots formed in the free ends of the bent-over parts dividing each end intox two members, the, outer member being adapted to fit within the recess ofthe face plate, the inner memberbeing adapted toy t within the spaceformed: between the back of the face plate and the right-angular members, and having. its end extending through; the slot in the casing and into the interior of the lock. f

Y CHARLES EDWARD LOWE. Witnesses:

j VFRANKA SMITH,

C.. J. SAMPLE. 

